Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Yoshimichi Ohki, Naoshi Hirai, Daomin Min, Liuqing Yang, Shengtao Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.

Original languageEnglish
Title of host publicationMinerals, Metals and Materials Series
PublisherSpringer International Publishing
Pages1323-1332
Number of pages10
ISBN (Print)9783030046385, 9783030046392, 9783319515403, 9783319651354, 9783319728520, 9783319950211
DOIs
Publication statusPublished - 2019 Jan 1
Event18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 - Boston, United States
Duration: 2019 Aug 182019 Aug 22

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019
CountryUnited States
CityBoston
Period19/8/1819/8/22

Keywords

  • Aging
  • Complex permittivity
  • Degradation
  • Gamma rays
  • High temperature
  • SiR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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  • Cite this

    Ohki, Y., Hirai, N., Min, D., Yang, L., & Li, S. (2019). Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy. In Minerals, Metals and Materials Series (pp. 1323-1332). (Minerals, Metals and Materials Series). Springer International Publishing. https://doi.org/10.1007/978-3-030-04639-2_86